public static NavigatableCollection <Track> Shuffle(NavigatableCollection <Track> playlist)
{
var map = new Dictionary <int, Guid>(playlist.Count);
//Create a map between the track id and a new guid
for (int i = 0; i < playlist.Count; i++)
{
map.Add(i, Guid.NewGuid());
}
//Create a new Playlist
var shuffledList = new NavigatableCollection <Track>();
//Sort the map by the new Guid
foreach (var kvp in map.OrderBy(x => x.Value))
{
KeyValuePair <int, Guid> pair = kvp;
shuffledList.Add(playlist[pair.Key]);
}
//Set the current item
shuffledList.MoveFirst();
return(shuffledList);
}
public static Track PickRandomTrack(NavigatableCollection <Track> playlist)
{
if (playlist.Count <= 0)
{
return(null);
}
var index = GetRandomInt(0, playlist.Count); //This is count, not count -1 as apparently the rng won't ever return the upper bounds.
return(playlist[index]);
}
public Profile()
{
Playlist = new NavigatableCollection <Track>();
_allowableFileTypes = new List <string>(new[] { ".flac", ".mp3", ".wav", ".wma", ".ogg" });
}